331221314152 has 16 divisors (see below), whose sum is σ = 627188876100. Its totient is φ = 163970947200.

The previous prime is 331221314129. The next prime is 331221314159. The reversal of 331221314152 is 251413122133.

It can be written as a sum of positive squares in 2 ways, for example, as 329216603076 + 2004711076 = 573774^2 + 44774^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 331221314152.

It is not an unprimeable number, because it can be changed into a prime (331221314159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204962877 + ... + 204964492.

Almost surely, 2^331221314152 is an apocalyptic number.

It is an amenable number.

331221314152 is a deficient number, since it is larger than the sum of its proper divisors (295967561948).

331221314152 is a wasteful number, since it uses less digits than its factorization.

331221314152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409927476 (or 409927472 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

Adding to 331221314152 its reverse (251413122133), we get a palindrome (582634436285).

The spelling of 331221314152 in words is "three hundred thirty-one billion, two hundred twenty-one million, three hundred fourteen thousand, one hundred fifty-two".